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參數(shù)資料
| 型號： | KA9270 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Audio Filter(音頻濾波器) |
| 中文描述： | 音頻過濾器（音頻濾波器） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 287K |
| 代理商： | KA9270 |
AUDIO FILTER
KA9270
5
APPLICATION INFORMATION
BUFFER2
It is used for impedance matching, between the D/A converter output and the de-emphasis input.
DE-EMPHASIS
De-emphasis operation condition
De-emphasis characteristic when the de-emphasis is on.
Figure 1. Equevalent Circuit of De-emphasis ON Mode
Av
≈
R
4
/ R
6
T1 = C1 (R
4
+ R
5
)
T2 = C1
×
R
5
The de-emphasis charcteristics are dependent upon the external parts value.
Control Input
De-emphasis Operation
High
ON
Low
OFF
+
-
INPUT
(from D/A Converter
Output)
to De-emphasis input
+
-
Vi
R6
R5
R4
Vo
C1
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